1 #define PETSC_DESIRE_FEATURE_TEST_MACROS /* for getpagesize() with c89 */ 2 #include <petscsys.h> /*I "petscsys.h" I*/ 3 #if defined(PETSC_HAVE_PWD_H) 4 #include <pwd.h> 5 #endif 6 #include <ctype.h> 7 #include <sys/stat.h> 8 #if defined(PETSC_HAVE_UNISTD_H) 9 #include <unistd.h> 10 #endif 11 #if defined(PETSC_HAVE_SYS_UTSNAME_H) 12 #include <sys/utsname.h> 13 #endif 14 #include <fcntl.h> 15 #include <time.h> 16 #if defined(PETSC_HAVE_SYS_SYSTEMINFO_H) 17 #include <sys/systeminfo.h> 18 #endif 19 20 #if defined(PETSC_HAVE_SYS_RESOURCE_H) 21 #include <sys/resource.h> 22 #endif 23 #if defined(PETSC_HAVE_SYS_PROCFS_H) 24 /* #include <sys/int_types.h> Required if using gcc on solaris 2.6 */ 25 #include <sys/procfs.h> 26 #endif 27 #if defined(PETSC_HAVE_FCNTL_H) 28 #include <fcntl.h> 29 #endif 30 31 /*@ 32 PetscMemoryGetCurrentUsage - Returns the current resident set size (memory used) 33 for the program. 34 35 Not Collective 36 37 Output Parameter: 38 . mem - memory usage in bytes 39 40 Options Database Key: 41 + -memory_view - Print memory usage at end of run 42 - -malloc_log - Activate logging of memory usage 43 44 Level: intermediate 45 46 Notes: 47 The memory usage reported here includes all Fortran arrays 48 (that may be used in application-defined sections of code). 49 This routine thus provides a more complete picture of memory 50 usage than PetscMallocGetCurrentUsage() for codes that employ Fortran with 51 hardwired arrays. 52 53 .seealso: PetscMallocGetMaximumUsage(), PetscMemoryGetMaximumUsage(), PetscMallocGetCurrentUsage(), PetscMemorySetGetMaximumUsage(), PetscMemoryView() 54 55 56 @*/ 57 PetscErrorCode PetscMemoryGetCurrentUsage(PetscLogDouble *mem) 58 { 59 #if defined(PETSC_USE_PROCFS_FOR_SIZE) 60 FILE *file; 61 int fd; 62 char proc[PETSC_MAX_PATH_LEN]; 63 prpsinfo_t prusage; 64 #elif defined(PETSC_USE_SBREAK_FOR_SIZE) 65 long *ii = sbreak(0); 66 int fd = ii - (long*)0; 67 #elif defined(PETSC_USE_PROC_FOR_SIZE) && defined(PETSC_HAVE_GETPAGESIZE) 68 FILE *file; 69 char proc[PETSC_MAX_PATH_LEN]; 70 int mm,rss,err; 71 #elif defined(PETSC_HAVE_GETRUSAGE) 72 static struct rusage temp; 73 #endif 74 75 PetscFunctionBegin; 76 #if defined(PETSC_USE_PROCFS_FOR_SIZE) 77 78 sprintf(proc,"/proc/%d",(int)getpid()); 79 if ((fd = open(proc,O_RDONLY)) == -1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to access system file %s to get memory usage data",file); 80 if (ioctl(fd,PIOCPSINFO,&prusage) == -1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_READ,"Unable to access system file %s to get memory usage data",file); 81 *mem = (PetscLogDouble)prusage.pr_byrssize; 82 close(fd); 83 84 #elif defined(PETSC_USE_SBREAK_FOR_SIZE) 85 86 *mem = (PetscLogDouble)(8*fd - 4294967296); /* 2^32 - upper bits */ 87 88 #elif defined(PETSC_USE_PROC_FOR_SIZE) && defined(PETSC_HAVE_GETPAGESIZE) 89 sprintf(proc,"/proc/%d/statm",(int)getpid()); 90 if (!(file = fopen(proc,"r"))) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to access system file %s to get memory usage data",proc); 91 if (fscanf(file,"%d %d",&mm,&rss) != 2) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SYS,"Failed to read two integers (mm and rss) from %s",proc); 92 *mem = ((PetscLogDouble)rss) * ((PetscLogDouble)getpagesize()); 93 err = fclose(file); 94 if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file"); 95 96 #elif defined(PETSC_HAVE_GETRUSAGE) 97 getrusage(RUSAGE_SELF,&temp); 98 #if defined(PETSC_USE_KBYTES_FOR_SIZE) 99 *mem = 1024.0 * ((PetscLogDouble)temp.ru_maxrss); 100 #elif defined(PETSC_USE_PAGES_FOR_SIZE) && defined(PETSC_HAVE_GETPAGESIZE) 101 *mem = ((PetscLogDouble)getpagesize())*((PetscLogDouble)temp.ru_maxrss); 102 #else 103 *mem = temp.ru_maxrss; 104 #endif 105 106 #else 107 *mem = 0.0; 108 #endif 109 PetscFunctionReturn(0); 110 } 111 112 PETSC_INTERN PetscBool PetscMemoryCollectMaximumUsage; 113 PETSC_INTERN PetscLogDouble PetscMemoryMaximumUsage; 114 115 PetscBool PetscMemoryCollectMaximumUsage = PETSC_FALSE; 116 PetscLogDouble PetscMemoryMaximumUsage = 0; 117 118 /*@ 119 PetscMemoryGetMaximumUsage - Returns the maximum resident set size (memory used) 120 for the program. 121 122 Not Collective 123 124 Output Parameter: 125 . mem - memory usage in bytes 126 127 Options Database Key: 128 + -memory_view - Print memory usage at end of run 129 - -malloc_log - Activate logging of memory usage 130 131 Level: intermediate 132 133 Notes: 134 The memory usage reported here includes all Fortran arrays 135 (that may be used in application-defined sections of code). 136 This routine thus provides a more complete picture of memory 137 usage than PetscMallocGetCurrentUsage() for codes that employ Fortran with 138 hardwired arrays. 139 140 .seealso: PetscMallocGetMaximumUsage(), PetscMemoryGetCurrentUsage(), PetscMallocGetCurrentUsage(), 141 PetscMemorySetGetMaximumUsage() 142 143 144 @*/ 145 PetscErrorCode PetscMemoryGetMaximumUsage(PetscLogDouble *mem) 146 { 147 PetscFunctionBegin; 148 if (!PetscMemoryCollectMaximumUsage) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"To use this function you must first call PetscMemorySetGetMaximumUsage()"); 149 *mem = PetscMemoryMaximumUsage; 150 PetscFunctionReturn(0); 151 } 152 153 /*@ 154 PetscMemorySetGetMaximumUsage - Tells PETSc to monitor the maximum memory usage so that 155 PetscMemoryGetMaximumUsage() will work. 156 157 Not Collective 158 159 Options Database Key: 160 + -memory_view - Print memory usage at end of run 161 - -malloc_log - Activate logging of memory usage 162 163 Level: intermediate 164 165 .seealso: PetscMallocGetMaximumUsage(), PetscMemoryGetCurrentUsage(), PetscMallocGetCurrentUsage(), 166 PetscMemoryGetMaximumUsage() 167 168 169 @*/ 170 PetscErrorCode PetscMemorySetGetMaximumUsage(void) 171 { 172 PetscFunctionBegin; 173 PetscMemoryCollectMaximumUsage = PETSC_TRUE; 174 PetscFunctionReturn(0); 175 } 176